~drizzle-trunk/drizzle/development

/* - mode: c++ c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2008 MySQL

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#include <config.h>

#include <drizzled/field/size.h>

#include <drizzled/error.h>

#include <drizzled/table.h>

#include <drizzled/session.h>

#include <drizzled/internal/my_sys.h>

#include <math.h>

#include <algorithm>

using namespace std;

namespace drizzled

{

namespace field

{

/****************************************************************************

  Field type Size int (8 bytes)

 ****************************************************************************/

Size::Size(unsigned char *ptr_arg, uint32_t len_arg,

           unsigned char *null_ptr_arg,

           unsigned char null_bit_arg,

           enum utype unireg_check_arg,

           const char *field_name_arg) :

  Field_num(ptr_arg,

            len_arg,

            null_ptr_arg,

            null_bit_arg,

            unireg_check_arg,

            field_name_arg,

            0, false, true)

{

  flags|= UNSIGNED_FLAG;

}

Size::Size(uint32_t len_arg,bool maybe_null_arg,

           const char *field_name_arg,

           bool unsigned_arg) :

  Field_num((unsigned char*) 0,

            len_arg, maybe_null_arg ? (unsigned char*) "": 0,

            0,

            NONE,

            field_name_arg,

            0,

            0,

            unsigned_arg)

{

  flags|= UNSIGNED_FLAG;

  assert(unsigned_arg);

}

int Size::store(const char *from,uint32_t len, const charset_info_st * const cs)

{

  int error= 0;

  char *end;

  uint64_t tmp;

  ASSERT_COLUMN_MARKED_FOR_WRITE;

  tmp= cs->cset->strntoull10rnd(cs, from, len, false, &end,&error);

  if (error == ERANGE)

  {

    set_warning(DRIZZLE_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_OUT_OF_RANGE, 1);

    error= 1;

  }

  else if (getTable()->in_use->count_cuted_fields && check_int(cs, from, len, end, error))

  {

    error= 1;

  }

  else

  {

    error= 0;

  }

  int64_tstore(ptr,tmp);

  return error;

}

int Size::store(double nr)

{

  int error= 0;

  int64_t res;

  ASSERT_COLUMN_MARKED_FOR_WRITE;

  nr= rint(nr);

  if (nr <= (double) INT64_MIN)

  {

    res= INT64_MIN;

    error= (nr < (double) INT64_MIN);

  }

  else if (nr >= (double) (uint64_t) INT64_MAX)

  {

    res= INT64_MAX;

    error= (nr > (double) INT64_MAX);

  }

  else

  {

    res=(int64_t) nr;

  }

  if (error)

  {

    set_warning(DRIZZLE_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_OUT_OF_RANGE, 1);

    return 0;

  }

  int64_tstore(ptr, res);

  return error;

}

int Size::store(int64_t nr, bool arg)

{

  int error= 0;

  ASSERT_COLUMN_MARKED_FOR_WRITE;

  if (not arg and nr < 0)

  {

    set_warning(DRIZZLE_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_OUT_OF_RANGE, 1);

    return 0;

  }

  int64_tstore(ptr,nr);

  return error;

}

double Size::val_real(void) const

{

  int64_t j;

  ASSERT_COLUMN_MARKED_FOR_READ;

  int64_tget(j,ptr);

  return (double) j;

}

int64_t Size::val_int(void) const

{

  int64_t j;

  ASSERT_COLUMN_MARKED_FOR_READ;

  int64_tget(j,ptr);

  return j;

}

String *Size::val_str(String *val_buffer, String *) const

{

  const charset_info_st * const cs= &my_charset_bin;

  uint32_t length;

  uint32_t mlength= max(field_length+1,22*cs->mbmaxlen);

  val_buffer->alloc(mlength);

  char *to=(char*) val_buffer->ptr();

  int64_t j;

  ASSERT_COLUMN_MARKED_FOR_READ;

  int64_tget(j,ptr);

  length=(uint32_t) (cs->cset->int64_t10_to_str)(cs,to,mlength, -10, j);

  val_buffer->length(length);

  return val_buffer;

}

int Size::cmp(const unsigned char *a_ptr, const unsigned char *b_ptr)

{

  int64_t a,b;

  int64_tget(a,a_ptr);

  int64_tget(b,b_ptr);

  return (a < b) ? -1 : (a > b) ? 1 : 0;

}

void Size::sort_string(unsigned char *to,uint32_t )

{

#ifdef WORDS_BIGENDIAN

  {

    to[0] = (char) (ptr[0] ^ 128);		/* Revers signbit */

    to[1]   = ptr[1];

    to[2]   = ptr[2];

    to[3]   = ptr[3];

    to[4]   = ptr[4];

    to[5]   = ptr[5];

    to[6]   = ptr[6];

    to[7]   = ptr[7];

  }

#else

  {

    to[0] = (char) (ptr[7] ^ 128);		/* Revers signbit */

    to[1]   = ptr[6];

    to[2]   = ptr[5];

    to[3]   = ptr[4];

    to[4]   = ptr[3];

    to[5]   = ptr[2];

    to[6]   = ptr[1];

    to[7]   = ptr[0];

  }

#endif

}

unsigned char *Size::pack(unsigned char* to, const unsigned char *from, uint32_t, bool)

{

  int64_t val;

  int64_tget(val, from);

  int64_tstore(to, val);

  return to + sizeof(val);

}

const unsigned char *Size::unpack(unsigned char* to, const unsigned char *from, uint32_t, bool)

{

  int64_t val;

  int64_tget(val, from);

  int64_tstore(to, val);

  return from + sizeof(val);

}

} /* namespace field */

} /* namespace drizzled */